NAME

       sane-teco1 - SANE backend for TECO / RELISYS scanners

DESCRIPTION

       The  sane-teco1  library implements a SANE (Scanner Access Now Easy) backend that provides
       access to some TECO SCSI flatbed scanners. This backend should be considered  beta-quality
       software!  TECO  scanners are sold under various brands like RELISYS, PIOTECH, TRUST. This
       backend may or may not support yours.

       The scanners that should work with this backend are:

                 Vendor Model           TECO model      status
              ----------------------  --------------  -----------
                Relisys AVEC 2400        VM3520        tested
                Relisys AVEC 2412        VM3520+       tested
                Relisys AVEC 4800        VM4530        untested
                Relisys AVEC 4816        VM4530+       untested
                Relisys RELI 2400        VM3530        untested
                Relisys RELI 2412        VM3530+       tested
                Relisys RELI 2412        VM3530+       untested
                Relisys RELI 4816        VM4540        tested
                Relisys RELI 4830        VM4542        tested
                Relisys RELI 9600        VM6530        untested
                Relisys RELI 9612        VM6530*       untested
                Relisys RELI 9624        VM6530+       untested
                Relisys RELI 9630        VM6540        untested
                Relisys RELI DS15        VM3440        untested
                Relisys RELI DS6         VM3420        untested
                Dextra  DF-600P          VM3510        tested
                Dextra  DF-4830T         VM4542        untested
                Dextra  DF-1200T+        VM3530+       untested
                Dextra  DF-9624          VM6530+       untested

       Note that the untested scanner will not be directly  supported.  You  should  contact  the
       author for that.

       The TECO VM number can usually be found at the back of the scanner. It is also part of the
       FCC ID. "sane-find-scanner -v" will also show the scsi  inquiry,  and  if  it  is  a  TECO
       scanner, the name will be there too.

       The  options  the  backend supports can either be selected through command line options to
       programs like scanimage or through GUI elements in xscanimage or xsane.

       If you have any success with a scanner not  listed  here,  or  if  you  have  any  strange
       behavior, please report to the backend maintainer or to the SANE mailing list.

       Valid command line options and their syntax can be listed by using
              scanimage --help -d teco1

       Scan Mode

       --mode selects  the basic mode of operation of the scanner valid choices are Black & White
              , Grayscale and Color The Black & White mode is  black  and  white  only  (1  bit).
              Grayscale  will  produce  256 levels of gray (8 bits). Color will produce a 24 bits
              color image.

       --resolution
              selects the resolution for a scan. The scanner can do all resolutions between 1 and
              600, in increments of 1.

       Geometry options

       -l -t -x -y
              control  the  scan  area:  -l  sets  the  top  left x coordinate, -t the top left y
              coordinate, -x selects the width and -y the height of the scan area. All parameters
              are specified in millimeters by default.

       Enhancement options

       --custom-gamma
              (color  mode  only)  allows  the  user  to  specify  a  gamma table (see the next 3
              parameters).

       --red-gamma-table
              (color mode only) can be used to download a user defined gamma table  for  the  red
              channel. The table must be 256 bytes long.

       --green-gamma-table
              (color  mode only) can be used to download a user defined gamma table for the green
              channel. The table must be 256 bytes long.

       --blue-gamma-table
              (color mode only) can be used to download a user defined gamma table for  the  blue
              channel. The table must be 256 bytes long.

       --dither
              (Black  & White only) select the dither mask to use. Possible values are Line art ,
              2x2 , 3x3 , 4x4 bayer , 4x4 smooth , 8x8 bayer , 8x8 smooth ,  8x8  horizontal  and
              8x8 vertical

       --preview
              requests  a  preview scan. The resolution used for that scan is 22 dpi and the scan
              area is the maximum allowed. The scan mode is user selected. The default is "no".

CONFIGURATION FILE

       The configuration file /etc/sane.d/teco1.conf supports only one  information:  the  device
       name to use (eg /dev/scanner).

FILES

       /usr/lib/arch_triplet/sane/libsane-teco1.a
              The static library implementing this backend.

       /usr/lib/arch_triplet/sane/libsane-teco1.so
              The  shared  library  implementing  this  backend  (present on systems that support
              dynamic loading).

ENVIRONMENT

       SANE_DEBUG_TECO1
              If the library was compiled with debug support enabled, this  environment  variable
              controls  the debug level for this backend. E.g., a value of 128 requests all debug
              output to be printed. Smaller levels reduce verbosity.

LIMITATIONS

       The windows TWAIN driver has many more options than this SANE backend.  However  they  are
       only software adjustments. This backend only implements what the scanner can support.

BUGS

       None known.

SEE ALSO

       sane-scsi(5), scanimage(1), xscanimage(1), xsane(1), sane(7)

AUTHOR

       The package is actively maintained by Frank Zago.
              http://www.zago.net/sane/#teco

CREDITS

       Thanks  to  Gerard  Delafond  for  the  VM4542 support.  Thanks to Jean-Yves Simon for the
       VM3510 support.

                                           14 Jul 2008                              sane-teco1(5)